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  1. or download this
    ~/MyPerl
        |
    ...
              |
              |_ a_program.out
    
  2. or download this
    use strict;
    use warnings;
    ...
    
    # do something with @output
    # Rest of the code
    
  3. or download this
    ~/MyPerl $ perl -c src/mycode.pl
    mycode.pl syntax OK
    
  4. or download this
    ~/MyPerl $ perl src/mycode.pl
    
  5. or download this
    Can't exec "./a_program.out": No such file or directory at
    src/mycode.pl line 217.